New York City Mayor Michael Bloomberg was there to offer his own perspective on the value of urban infrastructure, and the colossal valves themselves were opened only a few hours later, bringing drinking water through the $5 billion tunnel, to residents of Lower Manhattan, for the very first time.

[Image: Waiting for the water to flow through Tunnel No. 3; Instagram by BLDGBLOG].

After no fewer than 43 years of construction, it was a pretty amazing ceremony to attend, sitting there at the end of Bloomberg’s reign, amidst security personnel, in a cathedral-like space beneath Central Park, reporters spread out across pews of blue plastic chairs arranged in what felt like a Romanesque side-chapel radiating off from the barrel vault of the central nave.